package com.ruoyi.web.controller.common;

import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.service.StorageConfigService;
import com.ruoyi.common.utils.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";
    @Autowired
    private StorageConfigService storageConfigService;

    @Autowired
    private AliyunOssUploadUtils aliyunOssUploadUtils;

    @Autowired
    private QiNiuUploadUtils qiNiuUploadUtils;

    @Autowired
    private TencentOssUploadUtils tencentOssUploadUtils;

    @Autowired
    private LocalUploadUtils localUploadUtils;

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }



    /**
     * 动态文件上传接口（根据默认存储服务器自动切换）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(@RequestParam("file") MultipartFile file) {
        try {
            // 1. 获取默认存储类型（local/aliyun/qiniu/tencent）
            String defaultStorageType = storageConfigService.getDefaultStorageType();
            if (defaultStorageType == null || defaultStorageType.isEmpty()) {
                defaultStorageType = "local"; // 默认为本地存储
            }

            // 2. 根据默认存储类型调用对应的上传工具
            String url;
            String fileName; // 完整文件名（含后缀，用于提取newFileName）
            switch (defaultStorageType) {
                case "aliyun":
                    url = aliyunOssUploadUtils.uploadFile(file);
                    fileName = url.substring(url.lastIndexOf("/") + 1);
                    break;
                case "qiniu":
                    // 七牛云工具类返回的是List<String>[文件名, URL]
                    List<String> qiniuResult = qiNiuUploadUtils.upload(file);
                    fileName = qiniuResult.get(0); // 直接使用返回的文件名（已处理为不含路径的格式）
                    url = qiniuResult.get(1);
                    break;
                case "tencent":
                    url = tencentOssUploadUtils.uploadFile(file);
                    fileName = url.substring(url.lastIndexOf("/") + 1);
                    break;
                case "local":
                default:
                    url = localUploadUtils.uploadFile(file);
                    //fileName = url.substring(url.lastIndexOf("/") + 1); // 从URL提取文件名（不含路径）
                    int doubleSlash = url.indexOf("//");
                    int pathStart = url.indexOf('/', doubleSlash + 2);
                    fileName = url.substring(pathStart);
                    break;
            }

            // 3. 统一返回结果格式（与原格式完全一致）
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url); // 文件完整访问URL
            ajax.put("fileName", url); // 带后缀的完整文件名（如bg1_20250819085000A001.jpg）
            ajax.put("newFileName", FileUtils.getName(fileName)); // 文件名（与fileName一致，因fileName已不含路径）
            ajax.put("originalFilename", file.getOriginalFilename()); // 原始文件名（如bg1.jpg）
            return ajax;

        } catch (Exception e) {
            return AjaxResult.error("文件上传失败：" + e.getMessage());
        }
    }
   /* public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }*/

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + FileUtils.stripPrefix(resource);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
